A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5920-00-074-4654
NSN 5999-00-954-7673
NSN 6650-01-162-8324
NSN 6150-00-636-8938
NSN 5950-01-422-0467
NSN 5930-00-847-4596
NSN 5905-01-101-5125
NSN 6145-00-252-5290
NSN 6645-01-305-9135
NSN 5965-01-087-6217
NSN 6105-00-810-0514
NSN 6610-00-421-9853